Subtract 42/72 from 28/14
1st number: 2 0/14, 2nd number: 42/72
28/14 - 42/72 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
28/14 = 28 × 36/14 × 36 = 1008/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Subtract the two like fractions:
1008/504 - 294/504 = 1008 - 294/504 = 714/504 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
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